For me, personally, no. When I bought my 90 gallon, getting Starphire glass was an option, but not worth the cost to me. There are some people that wouldn't get a tank without it. When you look at a tank with Starphire glass, you really can see a difference. I notice how much better things look. But not $200 more better!
There is a middle ground -- you can get Starphire glass only on the front panel (instead of three sides) and that will save you about 50%.